On 25/01/2024 17:22, Japin Li wrote:
On Thu, 25 Jan 2024 at 21:43, Aleksander Alekseev <aleksan...@timescale.com> 
wrote:
I find heapam_relation_copy_data() and index_copy_data() have the following 
code:

         dstrel = smgropen(*newrlocator, rel->rd_backend);

         ...

         RelationCreateStorage(*newrlocator, rel->rd_rel->relpersistence, true);

The smgropen() is also called by RelationCreateStorage(), why should we call
smgropen() explicitly here?

I try to remove the smgropen(), and all tests passed.

That's a very good question. Note that the second argument of
smgropen() used to create dstrel changes after applying your patch.
I'm not 100% sure whether this is significant or not.

Thanks for the review.

According the comments of RelationData->rd_backend, it is the backend id, if
the relation is temporary.  The differnece is RelationCreateStorage() uses
relpersistence to determinate the backend id.

Committed, thanks!

--
Heikki Linnakangas
Neon (https://neon.tech)



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